Hey everybody,this is my first published design. I'm acutally upgrading my ultimaker 2 a bit and there might come a few other improvements.I hope you enjoy the design and sorry for the color :-DFor me it works just fine, but it surely depends on the shrinkage of your printer if the bearings fit well or the printed nut screws perfectliy onto the axis...I added some original files that you can manipulate your bearing seat and btw. you should print at least the axis quite massive ;-)